convert between pressure units like pascal, psi, bar, atmosphere, torr, and morepressure units instantly
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Frequently Asked Questions
What is pressure and how is it measured?
Pressure is the force applied perpendicular to a surface per unit area. It's commonly measured in units like PSI (pounds per square inch), Bar, Pascal, and Atmosphere. Different industries use different pressure units: automotive uses PSI, meteorology uses millibars, and scientific applications use Pascals.
How do you convert PSI to Bar quickly?
To convert PSI to Bar, divide the PSI value by 14.5038. For example, 30 PSI = 30 ÷ 14.5038 = 2.07 Bar. This conversion is commonly needed for tire pressure, hydraulic systems, and compressed air applications.
What pressure units are used in different industries?
Automotive industry uses PSI for tire pressure, HVAC uses inches of mercury (inHg) for vacuum, meteorology uses millibars or hectopascals, medical equipment uses mmHg for blood pressure, and scientific applications use Pascals or kilopascals.
Why do tire pressures use PSI in some countries and Bar in others?
PSI (pounds per square inch) is primarily used in the United States, while Bar is used in most other countries that follow the metric system. 1 Bar ≈ 14.5 PSI. Many modern tire pressure gauges show both units for convenience.
What is atmospheric pressure and how does it vary?
Standard atmospheric pressure at sea level is 1 atmosphere (atm) = 14.7 PSI = 1.013 Bar = 101,325 Pascals. Atmospheric pressure decreases with altitude and varies with weather conditions. Weather systems use pressure changes to predict weather patterns.
How accurate are pressure conversions for engineering applications?
Pressure conversions are extremely accurate when using precise conversion factors. Our converter uses internationally standardized factors for engineering precision. For critical applications, always verify calculations and consider temperature effects on pressure readings.
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